摘要
通过铁研试验及热模拟试验等对超超临界锅炉用SA-335P92钢的焊接性进行了研究。铁研试验表明,材料焊前钨极氩弧焊时预热温度≥150℃,焊条电弧焊和埋弧焊时预热温度≥200℃可以保证焊接不出现裂纹。通过焊缝粗晶区冲击试验,确定了合理的焊接热处理规范。进行了相应的使用焊接性试验,给出了SA-335P92材料的焊接工艺要点。
The weldability of SA-335P92 steel applied in ultra - supercritical( USC) boiler has been researched by slit cracking test and synthetic heat-affected zone test. It is indicated in the slit cracking test that there is no cracking for SA-335P92 material welding when the preheating temperature is higher than 150 ℃ for GTAW and 2001℃ for SMAW and SAW. The synthetic heat-affected zone test confirms the post heat treatment specification and the welding procedure of SA-335P92 steel.
出处
《焊接》
北大核心
2007年第6期44-46,共3页
Welding & Joining
